Lock



FIG. 1 is a perspective view of a lock showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken lines adjacent to the shade lines form the boundary of theclaimed design. The portion shown in broken lines are for illustrativepurpose only. None of the broken lines form part of the claimed design.

I claim the ornamental design for a lock, as shown and described.